I was my brushes almost once a week. I love doing it. There is nothing better than freshly cleaned brushes to apply your makeup. I like to wash mine with Johnson & Johnson lavender baby shampoo mixed with a drop of dishwasher soap. P.S. I just bought a few of the Real Techniques brushes and I LOVE them. Such a great price for quality brushes. You can buy them at Ulta and Walmart. I'm sure other stores carry them as well.